Acoustically superior and versatile stethoscope suitable for doctors, paediatricians, cardiologists and medical students. The threaded chest piece permits the use of five interchangeable fittings. Using the correct chest piece fitting permits accurate detection of low, medium and high frequency sounds indicative of a range of lung and heart conditions in infants, children and adults. The choice of adult and paediatric diaphragms for recognition of high pitched respiratory sounds and certain heart sounds, along with three bells ( adult, child and infant), for low frequency sound detection, ensure accurate detection over a wide frequency range. Matching the diaphragm or bell to the patient’s size gives better sound location and the twin 56 cm head to chest tubes, provide clear acoustics for more exact condition diagnosis. The adjustable binaural has a choice of silicon or mushroom ear tips which come in the accessories pouch, which also contains a spare adult and child plastic diaphragm and the three bells.